SCP-2169-2-1 — Appears to be a middle-aged male of indeterminate ancestry, and has filled the role of the surgeon in 83% of recorded activations. Has repeatedly been called "Dave" by other instances of SCP-2169-1.

I think you mean SCP-2169-2, not SCP-2169-1.

Other than that I think I like this. It is supposed to be a game right?

When the patient scheduled for surgery within the affected operating room is sedated and moved into the room, the affected room will become unreachable, with any attempt to open the doors failing. Subsequently, individuals designated SCP-2169-2 will manifest within the room and begin to perform the scheduled surgical procedure on the subject:

During the procedure, instances of SCP-2169-2 will converse among themselves on a number of esoteric and often anomalous topics. When the procedure is complete, all instances of SCP-2169-2 will demanifest and SCP-2169-1 will become reachable, after which the affected patient can be removed.

I guess SCP-2169-1 is an observation suite, not an operating room, right?